JPH0556986A - Vertical horizontal determining plate of complete denture - Google Patents

Abstract

PURPOSE:To exactly set the central bite position of upper and lower bite plates for production of total denture. CONSTITUTION:This plate consists of a plane plate 5 having an approximately U-shaped plane to be fixed to the bite block of the maxillary bite plate and bite members 9, 9 to be fixed to both sides of the bite block of the mandibular bite plate. The plane plate 5 and the bite members 9, 9 come into contact at the time of the biting of the upper and lower bite plates, and the contact parts of the bite members 9, 9 with the plane plate 5 are formed to an arc shape, by which the plane movement of the mandible at the time of tapping is made free and the central bite position of the mandible is exactly set.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical horizontal decision plate used to determine the front and back and left and right central occlusal positions during the occlusal acquisition of the upper and lower occlusal beds in the process of manufacturing a complete denture. ..

[0002]

2. Description of the Related Art Generally, general dentures are manufactured by individual tray manufacturing, working model manufacturing, occlusal floor manufacturing, occlusal sampling, artificial tooth selection, model attachment to articulator, front tooth artificial tooth arrangement, molar tooth artificial. It is performed through the steps of tooth alignment, gingival formation, dental mold acquisition, burial, superposition, polishing, reattachment of artificial teeth articulator, and grinding, but among them, occlusal acquisition using the occlusal bed determines the lower jaw position. , The degree of repair of morphological changes such as facial features, the reference plane of artificial tooth arrangement and the size of the tongue chamber, etc. will be determined, so it is extremely important to make dentures both morphologically and functionally. To have.

In the occlusal sampling, (1) the occlusal plane is determined by the maxillary occlusal floor, and at the same time, the elevations of the upper lip and cheek are adjusted.
(2) Wearing the mandibular occlusal floor to determine the occlusal height, (3) Determine the anteroposterior and lateral center positions based on the height, and adjust the elevation of the upper and lower jaws, (4) Midline, etc. Draw a line (5)
The order is to fix the upper and lower jaw occlusal beds, but if the occlusal sampling is wrong and a denture with a large occlusal height is made, proper chewing force is not applied during chewing, and conversation is disturbed. When a low denture causes muscle fatigue, the same phenomenon as the former occurs, and the mandibular joint head presses the posterior wall of the glenoid fossa,
The anterior-posterior and lateral error of the center position, which causes joint disorders and hearing loss, also makes the mandibular position unstable, leading to mastication, pronunciation problems, mandibular displacement, and even temporomandibular joint disease. Great care must be taken in determining rank.

Conventionally, the lower jaw position is determined by inserting the upper and lower occlusal beds into the oral cavity, softening the lower occlusal ridge to be bitten, and obtaining an appropriate occlusal height, and then tapping the upper and lower occlusal beds several times. Repeatedly, fill in the midline on the upper and lower occlusal ridges at the position where the upper and lower occlusal floors are occlusally stable, and fix the upper and lower occlusal floors with a bite lock after confirming that there is no deviation in the upper and lower midline. There is.

[0005]

By the way, the upper and lower occlusal ridges are formed into a substantially U-shaped plane by using wax, and the occlusal surfaces of the occlusal ridges come into contact with each other at the time of tapping. The occlusal ridge is not slippery, which makes it difficult to move in the front, back, left and right planes, and if an occlusal mark is generated on the occlusal surface at the beginning of tapping, the mandibular position in the subsequent tapping is affected by the occlusal mark. become,
Therefore, there is a problem that an error is likely to occur in the determination of the center positions of the front and rear and the left and right of the upper and lower occlusal beds.

[0006] Therefore, the present invention provides a vertical horizontal decision plate for a complete denture, which smoothes the horizontal mobility of the upper and lower occlusal beds during occlusal sampling and can accurately determine the central occlusal position of the upper and lower occlusal beds. The task is to do.

[0007]

In order to solve the above problems, the present invention provides a flat U-shaped flat plate fixed to the occlusal surface of an occlusal ridge on one occlusal floor and an occlusal ridge on the other occlusal floor. And an occlusal member that is fixed to both sides of the occlusal member along the length direction, and the occlusal member has a structure in which an occlusal portion protruding from the occlusal surface of the occlusal bank is formed in an arc-shaped cross-sectional shape.

[0008]

[Function] A flat plate is fixed to the occlusal surface of the occlusal ridge of the maxillary occlusal bed, and occlusal members are fixed to both sides of the occlusal surface of the occlusal ridge of the lower occlusal bed. The occlusal plane by the lower surface of the face plate is determined, then the lower occlusal occlusal floor is inserted into the oral cavity and mounted, and the occlusal ridges are occluded with the occlusal ridge softened to determine the occlusal height.

After obtaining the above occlusal height, tapping is repeated. At this time, in the upper and lower occlusal floors, since the flat plate and the occlusal members on both sides occlude, and the occlusal portion of the occlusal member has an arc-shaped cross-sectional shape, the planar movement of the lower jaw relative to the upper occlusal floor is smooth. It becomes free, and the center occlusal position of the upper and lower occlusal beds can be accurately set by repeating tapping, the midline is entered on the upper and lower occlusal ridges, and it is confirmed that there is no deviation in the upper and lower midline. Fix the upper and lower occlusal beds.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a state in which the maxillary occlusal bed 1 is in the process of being manufactured. An upper jaw base floor 3 is formed by a shellac plate on a plaster upper jaw model 2 formed by using an individual tray, and wax is placed on the base floor 3. By arranging the occlusal ridge 4 by building it into a substantially U-shaped plane, fixing the occlusal surface of the occlusal ridge 4 by superimposing and fixing the plane U-shaped plane plate 5, and removing the foundation floor 3 from the upper jaw model 2 The maxillary occlusal bed 1 as shown in FIG. 2 is obtained.

FIG. 3 shows a lower jaw occlusal floor 6, and like the upper jaw occlusal floor 1, a substantially U-shaped occlusal ridge 8 is provided on a foundation floor 7, and occlusal members 9 and 9 are provided on both sides of the occlusal ridge 8. It has a fixed structure.

As shown in FIG. 8, a flat plate 5 fixed to the maxillary occlusal bed 1 and a pair of occlusal members 9 and 9 fixed to the mandibular occlusal bed 6 serve as a vertical horizontal decision plate, for example, stainless steel or the like. The metal plate of is used, and the flat plate 5 improves the fixing strength to the maxillary occlusal ridge 4,
The upper surface may be roughened, or an embedding pin for the maxillary occlusal ridge 4 may be provided upright.

The occlusal members 9, 9 are formed in a linear state having an inverted U-shaped cross section, arranged on both sides of the mandibular occlusal ridge 8 along the length direction of the linear part, and the lower part is embedded in the chin occlusal ridge 8. ,
The lower jaw occlusal ridge 8 is fixed so that the upper portion thereof protrudes from the occlusal surface by an appropriate amount, and the upper portion serving as the occlusal surface with the flat plate 5 is an arcuate surface.

FIGS. 4 and 5 show a state in which the maxillary occlusal bed 1 and the mandibular occlusal bed 6 are mounted in the oral cavity and occluded, and FIG.
Shows the planar relationship between the flat plate 5 and the occlusal members 9, 9 in this occlusal state.

First, with the maxillary occlusal bed 1 attached to the upper jaw of the oral cavity and the occlusal ridge 4 being heated and softened, a rubber strip for setting the nasal auditory canal line and an occlusal plane marking plate or the like are used to flatten the occlusal plane by a known method. The height and direction of the occlusal plane defined by the lower surface of the face plate 5 are set.

Next, the lower jaw occlusal bed 6 is mounted in the oral cavity, the upper and lower occlusal beds 1 and 6 are bitten with the lower jaw occlusal ridge 8 softened, and the occlusal members 9 and 9 fixed to the lower occlusal ridge 8 are fixed. Is brought into contact with the lower surface of the plane plate 5 to obtain an appropriate occlusal height diameter of the lower occlusal ridge 8.

After the occlusal height of the lower occlusal ridge 8 is obtained as described above, tapping is repeated several times with the upper and lower occlusal beds 1 and 6 attached.

At the time of tapping, as shown in FIG. 6, the lower jaw occlusal floor 6 is contacted with the occlusal members 9 on both sides of the lower occlusal floor 5 as shown in FIG.
9 is made of metal such as stainless steel, and the occlusal member 9,
Since the upper end portion of the contact plate 9 that comes into contact with the flat plate 5 is an arcuate surface, the planar contact between both contact parts is smooth, and no occlusal mark is generated during occlusion, and the planar movement of the lower jaw is achieved. Is completely free, so that the central occlusal position of the lower jaw can be accurately known during repeated tapping.

The upper and lower occlusal beds 1 and 6 are occluded in the central occlusal position, and in this state, the midline is drawn on the upper and lower occlusal ridges 4 and 8, and the bite lock 10 is attached to the upper and lower occlusal ridges 4 and 8 as shown in FIG.
To fix the upper and lower occlusal floors 1 and 6 to complete the occlusal sampling.

The upper and lower occlusal beds 1 and 6 after the occlusal sampling are taken out from the oral cavity, mounted on an articulator in a state in which a model is combined with each of them, and transferred to the artificial tooth arranging step.

[0022]

As described above, according to the present invention, the flat plate is fixed to one occlusal ridge in the upper and lower occlusal floors, and the occlusal members are fixed to both sides of the other occlusal ridge so that the flat plate of the occlusal member contacts. Since the arcuate shape is made arcuate, when the central occlusal position of the upper and lower occlusal beds is set, the planar movement of the lower jaw during tapping is smooth and free, and the central occlusal position of the upper and lower occlusal beds can be set accurately.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a manufacturing state of an upper occlusal floor

[Fig. 2] Bottom view of maxillary occlusal bed

[Fig. 3] Plan view of the lower occlusal floor

FIG. 4 is a vertical sectional front view showing the occlusal state of the upper and lower occlusal beds.

FIG. 5 is a vertical side view of the above.

FIG. 6 is a transverse plan view of the same as above.

FIG. 7 is a front view showing a fixed state of the upper and lower occlusal beds.

FIG. 8 is an exploded perspective view showing a plane plate and an occlusal member.

[Explanation of symbols]

 1 Maxillary occlusal bed 4 Maxillary occlusal ridge 5 Plane plate 6 Mandibular occlusal floor 8 Mandibular occlusal ridge 9 Occlusal member

Claims (1)

[Claims] 1. A flat U-shaped flat plate fixed to an occlusal surface of an occlusal ridge on one side of the occlusal floor, and occlusal members fixed to both sides of the occlusal ridge of the other occlusal floor along the length direction, The occlusal member is a vertical horizontal decision plate for a complete denture in which an occlusal portion that protrudes from the occlusal surface of an occlusal ridge has an arcuate cross-sectional shape.